"The waves or vibrations of Sound permeate the whole of the body...... It exists in the body in the form of vitality or Life-Current. It exists in the mental sky in the form of Light, while it exists as Sound in the void.... It is the highest duty of every individual to acquire experiential knowledge of this Sound and to investigate or explore the Origin or Source from where this Sound flows out." (Baba Devi Sahab)

"Understand the jiva [soul] as the drop, and the Naam of the Satguru as the Ocean...." (Anurag Sagar)

"Listening to the Sound Current is a separate practice. During the practice you need not repeat the Holy Names nor fix your inner gaze, but only listen attentively, while staying at the back of the eye-brows [third eye center] .... The Sound will draw closer, grow stronger and ultimately come from above, and pull your soul [surat] up to the higher regions." (Kirpal Singh, Spiritual Elixir, Volume One)

"When using this Mystical Sound as the basic support for his meditation, the seeker should also be very alert and attentive as to where the subtler aspects of this Sound are drawing him within himself. He will thus, little by little, gravitate to ever finer states of consciousness and will start to sense an out-of-the-ordinary inner continuity of being that is beyond description and that it is impossible for him to experience in his habitual state. As his meditation deepens, it will bring with it a most subtle, transparent, and luminous consciousness that he will finally become immersed in and one with. He will no longer sense himself in the same way as he did in the past. He will become mysteriously transformed into an unchanging and enigmatic 'Spectator', plunged in the vast silence of an eternal cosmic 'Nowness.'

"The aspirant should look upon this Nada [Mystic Sound] as a Divine Grace and rare opportunity, always turning to it with the utmost respect, revering it as the treasured means that can make his deliverance possible." (Edward Salim Michael, "The Law of Attention - Nada Yoga and the Way of Inner Vigilance", Published by Inner Traditions, Vermont)

The World Is An Illusion -- Practice Meditation

When Satguru Baba Devi Sahib was nearing the time of his departure from this ephemeral world for his true destination, satsangis humbly requested him to bless them with his parting words. Responding, Baba Devi Sahab obliged by saying, "Duniyaa waham hai, abhyaas karo", meaning: "This world is an illusion. Practice meditation." (From the Preface to the, "Baal Kaa Aadi Aur Uttar Kaa Ant" of Sant Tulsi Sahab")